43705 has 4 divisors (see below), whose sum is σ = 52452. Its totient is φ = 34960.

The previous prime is 43691. The next prime is 43711. The reversal of 43705 is 50734.

43705 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50734 = 2 ⋅25367.

It can be written as a sum of positive squares in 2 ways, for example, as 11664 + 32041 = 108^2 + 179^2 .

It is not a de Polignac number, because 43705 - 2⁷ = 43577 is a prime.

It is a Duffinian number.

43705 is strictly pandigital in base 6.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4366 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (13113).

2⁴³⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

43705 is a deficient number, since it is larger than the sum of its proper divisors (8747).

43705 is an equidigital number, since it uses as much as digits as its factorization.

43705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8746.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 43705 is about 209.0574083834. The cubic root of 43705 is about 35.2244084323.

The spelling of 43705 in words is "forty-three thousand, seven hundred five".